The answer is C. It has the wrong graph labels.
Answer:
( cos40° + isin40°)
Step-by-step explanation:
To divide

=
[ cos(x₁ - x₂) + isin(x₁ - x₂)
Given

=
( cos(90 - 50)° + isin(90 - 50)°
=
( cos40° + isin40° )
If P=8, Then you would plug in 8 for P.
4(8)-2 = 30
Hope this helps :)